Estimation of an extremal index using the runs estimator suggested in (Smith and Weissman, 1994).
The function is called by
KRDetect.outliers.EV and is not intended for use by regular users of the package.
extremal.index.runs(x, u, r)
a numeric vector of observations.
a numeric value giving threshold.
a positive integer giving the value of runs parameter (Smith and Weissman, 1994).
This function computes the runs estimate of extremal index suggested in (Smith and Weissman, 1994).
The function is exported for developer use only. It does not perform any checks on inputs since it is only convenience function used within
a numeric value of an extremal index estimate
Smith, RL, Weissman, I (1994). Estimating the Extremal Index. Journal of the Royal Statistical Society, Series B, 56, 515-529.
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